Why put solar panels on green space when we could put them over car parks?

The long-running series in which readers answer other readers' questions considers a hot topic within renewable energyThis week's replies: Are there places on Earth where humans haven't been?I would like to know why we build solar farms over green space, when we could just put them over massive car parks as a popular current internet meme suggests. Chris, MiddlesbroughPost your answers (and new questions) below or send them to nq@theguardian.com. A selection will be published next Sunday. Continue reading...